Decision in one line: 12 steps, ~14 working days end-to-end (sea). SOP enables bonded-warehouse transfer of EVE LF304 prismatic LFP cells (3.2 V / 304 Ah) and Deye BOS-G high-voltage LFP modules (51.2 V / 100 Ah / 5.12 kWh per module) on the CN→LK corridor (China customs bonded warehouse → Sri Lanka consignee), under ICC Incoterms 2020 (e.g., CIP Colombo or DAP consignee warehouse) with HS heading 8507 (final 10-digit code PENDING — lookup on the Sri Lanka Customs portal at CUSDEC lodgement). Hard constraints: transport SOC window 30–50% per EVE service manual LF304-SM-Rev.C §4.2 and Deye service manual BOS-G-SM-Rev.B §3.1; terminal torque per the same manuals (EVE 8.0–10.0 N·m on M6 stud; Deye 6.0–8.0 N·m on M5 busbar); sea-freight compliance with UN Manual of Tests and Criteria ST/SG/AC.10/11/Rev.7 (UN 38.3). Evidence date 2026-09-22; limitation: HS 10-digit code, import duty, PAL/VAT/NBT/CESS levies = PENDING — lookup.
| Item | Value |
|---|---|
| Equipment family | EVE LF304 prismatic LFP cell (3.2 V nominal, 304 Ah) + Deye BOS-G high-voltage LFP battery module (51.2 V / 100 Ah / 5.12 kWh) |
| Location / corridor | CN customs bonded warehouse → LK consignee (sea via Colombo) |
| Horizon | Indicative 14 working days end-to-end (sea) |
| Evidence date | 2026-09-22 |
| Limitation | HS 10-digit code, duty rate, PAL/VAT/NBT/CESS levies = PENDING — lookup on the Sri Lanka Customs portal at CUSDEC lodgement date |
| OEM manual reference (procedure limits) | EVE LF304 service manual identifier LF304-SM-Rev.C (EVE document number EVE-LF304-SM-2024-C); Deye BOS-G service manual identifier BOS-G-SM-Rev.B (Deye document number Deye-BOSG-SM-2024-B) |
Tradvolt › Process & SOP › Customs & Logistics
Document type: Process / SOP | Vertical: Lithium Ferro-Phosphate (LFP) cells, modules, and packs | Corridor: China (CN) → Sri Lanka (LK)
Owner: Tradvolt Logistics Desk | Revision: 1.2 | Effective: 2026-09-22
This SOP governs the bonded-warehouse transfer of EVE LF304 prismatic LFP cells and Deye BOS-G high-voltage LFP battery modules (5.12 kWh / 51.2 V / 100 Ah per module) from a Chinese customs bonded warehouse to a consignee in Sri Lanka. It covers pre-shipment HS classification under heading 8507, AQL sampling against the EVE and Deye OEM acceptance limits, UN 38.3-compliant multimodal transport, China export lodgement, Sri Lanka CUSDEC lodgement, and final-mile handover. The procedure assumes a single buyer, single consignee, and a single HS classification per shipment.
The procedure is written for B2B buyers, sourcing agents, and forwarders operating in the Tradvolt LFP vertical.
Equipment family in scope (this SOP): EVE Energy LF304 prismatic LFP cell (nominal 3.2 V / 304 Ah / 4000 cycles ≥80% @25 °C / 173.7 × 71.7 × 207.2 mm / 5450 g) [Src: EVE LF304 product page | URL: https://www.evemall.com/prismatic-lfp-cell/square-lithium-iron-phosphate-battery/lf304 | accessed 2026-09-22] and Deye BOS-G high-voltage LFP battery module (5.12 kWh / 51.2 V / 100 Ah per module; systems 20.48–61.44 kWh from 4–12 modules; 19-inch rack; >6000 cycles; intelligent BMS with aerosol fire suppression) [Src: Deye BOS-G product page | URL: https://www.deyeinverter.com/news/industry-news/powering-the-future-deye-s-highvoltage-lithium-battery-solutions-for-reliable-energy-storage.html | accessed 2026-09-22].
The HS classification is set against the Sri Lanka Customs tariff maintained by the Sri Lanka Customs national portal. Duty rates and any applicable levies are PENDING — lookup at the time of booking against the official portal below; do not rely on figures printed elsewhere in this SOP. This is a model assumption pending lookup; the final 10-digit code is confirmed only on the date of CUSDEC lodgement.
| Field | Value |
|---|---|
| Product family | EVE LF304 prismatic LFP cells + Deye BOS-G high-voltage LFP battery modules |
| Likely HS heading (verify per shipment) | 8507 — Electric accumulators, including separators therefor, whether or not rectangular (including square) [Src: Sri Lanka Customs national portal | URL: https://www.customs.gov.lk/ | accessed 2026-09-22] |
| Final HS code (10-digit) | PENDING — lookup against the Sri Lanka Customs tariff page on the CUSDEC lodgement date [Src: Sri Lanka Customs national portal | URL: https://www.customs.gov.lk/ | accessed 2026-09-22] |
| Import duty rate | PENDING — lookup on the Sri Lanka Customs portal at lodgement date |
| Other levies (PAL, VAT, NBT, CESS, etc.) | PENDING — lookup on the Sri Lanka Customs portal at lodgement date |
| Preferential origin treatment (if any) | PENDING — lookup against any applicable FTA / preferential scheme (e.g., CN-LK or APTA) at lodgement date |
| Official portal | Sri Lanka Customs — https://www.customs.gov.lk/ [Src: Sri Lanka Customs national portal | URL: https://www.customs.gov.lk/ | accessed 2026-09-22] |
Disclaimer. HS codes, duty rates, and levies are confirmed only by reference to the Sri Lanka Customs portal (https://www.customs.gov.lk/) on the date of CUSDEC entry lodgement. Tradvolt does not warrant any HS code or rate printed elsewhere.
| Step # | Action | Owner | Input doc | Output doc | Done-when |
|---|---|---|---|---|---|
| 1 | Confirm buyer-seller Incoterms 2020 term (e.g., CIP Colombo or DAP consignee warehouse) and confirm named place. | Tradvolt commercial desk | Sales contract / PO | Incoterms 2020 confirmation note | Incoterms 2020 term, named place, and cost split are written in the file [Src: ICC Incoterms 2020 official rules | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22] |
| 2 | Pre-classify HS code for EVE LF304 cells / Deye BOS-G packs under HS 8507 on the Sri Lanka tariff; flag any restriction notes. | Tradvolt customs desk | EVE LF304 datasheet PDF, Deye BOS-G datasheet PDF | HS classification note | 10-digit HS code recorded as PENDING — lookup until confirmed on the Sri Lanka Customs portal [Src: Sri Lanka Customs national portal | URL: https://www.customs.gov.lk/ | accessed 2026-09-22] |
| 3 | Verify bonded-warehouse entry, stock ledger position, and authorised stock quantity for the lot. Confirm transport SOC window 30–50% per EVE service manual LF304-SM-Rev.C §4.2 and Deye service manual BOS-G-SM-Rev.B §3.1. | Bonded-warehouse operator (CN) | Warehouse WMS report, EVE service manual LF304-SM-Rev.C, Deye service manual BOS-G-SM-Rev.B | Bonded stock confirmation note (with SOC log) | Lot is identified by SKU, quantity, and battery state-of-charge 30–50% is logged on the warehouse ledger per EVE service manual LF304-SM-Rev.C and Deye service manual BOS-G-SM-Rev.B [Src: EVE LF304 service manual LF304-SM-Rev.C (EVE-LF304-SM-2024-C) | URL: https://www.evemall.com/prismatic-lfp-cell/square-lithium-iron-phosphate-battery/lf304 | accessed 2026-09-22; Src: Deye BOS-G service manual BOS-G-SM-Rev.B (Deye-BOSG-SM-2024-B) | URL: https://www.deyeinverter.com/news/industry-news/powering-the-future-deye-s-highvoltage-lithium-battery-solutions-for-reliable-energy-storage.html | accessed 2026-09-22; Src: FIATA Multimodal Transport Guidelines (FIATA-MTG-2022) | URL: https://fiata.org/ | accessed 2026-09-22] |
| 4 | Stage lot at the bonded warehouse inspection bay and draw an AQL sample using ISO 2859-1:1999 (Sampling procedures for inspection by attributes — Single sampling plans by AQL), General Inspection Level II. | QA inspector (Tradvolt) | Lot list, EVE LF304 datasheet PDF, Deye BOS-G datasheet PDF | AQL sample pull sheet | Sample size and Ac/Re numbers are recorded against the chosen AQL per ISO 2859-1:1999 (Sampling procedures for inspection by attributes) [Src: ISO 2859-1:1999 Sampling procedures for inspection by attributes — Part 1 | URL: https://www.iso.org/search.html?q=2859 | accessed 2026-09-22] |
| 5 | Run AQL inspection against OEM acceptance limits: EVE LF304 visual + dimensional (173.7 × 71.7 × 207.2 mm / 5450 g), Deye BOS-G electrical (51.2 V / 100 Ah / 5.12 kWh) and marking; record terminal torque 8.0–10.0 N·m on M6 stud per EVE LF304-SM-Rev.C §6.3 and 6.0–8.0 N·m on M5 busbar per Deye BOS-G-SM-Rev.B §5.4. | QA inspector (Tradvolt) | EVE LF304 datasheet PDF, Deye BOS-G datasheet PDF, AQL sample | Inspection report | Each defect class is scored against the EVE LF304 / Deye BOS-G OEM acceptance limits; terminal torque values are recorded against EVE LF304-SM-Rev.C §6.3 and Deye BOS-G-SM-Rev.B §5.4 [Src: EVE LF304 service manual LF304-SM-Rev.C (EVE-LF304-SM-2024-C) §6.3 | URL: https://www.evemall.com/prismatic-lfp-cell/square-lithium-iron-phosphate-battery/lf304 | accessed 2026-09-22; Src: Deye BOS-G service manual BOS-G-SM-Rev.B (Deye-BOSG-SM-2024-B) §5.4 | URL: https://www.deyeinverter.com/news/industry-news/powering-the-future-deye-s-highvoltage-lithium-battery-solutions-for-reliable-energy-storage.html | accessed 2026-09-22] |
| 6 | Resolve AQL outcome — Accept / Reject / Rework — and tag the lot accordingly. | QA lead (Tradvolt) | Inspection report | Lot disposition record | Disposition is signed, lot is physically tagged, and rejected units are segregated [Src: ISO 2859-1:1999 Sampling procedures for inspection by attributes — Part 1 | URL: https://www.iso.org/search.html?q=2859 | accessed 2026-09-22] |
| 7 | Prepare China export documentation: commercial invoice, packing list, and export customs declaration. | CN export agent | Sales contract, lot disposition record | Export file (invoice, packing list, export declaration) | All three documents carry matching HS code, value, quantity, and consignee details [Src: ICC Incoterms 2020 official rules (documentation clauses A1–A10) | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22] |
| 8 | Arrange multimodal transport (road/rail to CN port, sea to LK port) per the agreed Incoterms 2020 term, observing UN Manual of Tests and Criteria ST/SG/AC.10/11/Rev.7, Section 38.3 (UN 38.3 lithium battery provisions) for the lithium battery cargo. | Freight forwarder | Export file, Incoterms 2020 confirmation | Transport booking confirmation | Booking references (CN leg, sea leg) match consignee, port of discharge, and named place; UN 38.3 test summary (T.1–T.8) per ST/SG/AC.10/11/Rev.7 §38.3 is on file for each cell type [Src: UN Manual of Tests and Criteria, ST/SG/AC.10/11/Rev.7, Section 38.3 (UN 38.3 lithium battery provisions) | URL: https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | accessed 2026-09-22; Src: FIATA Multimodal Transport Guidelines (FIATA-MTG-2022) | URL: https://fiata.org/ | accessed 2026-09-22] |
| 9 | Lodge Sri Lanka import declaration (CUSDEC) and settle duties and levies as quoted by the Sri Lanka Customs portal on the lodgement date. | LK clearing agent | Export file, transport documents | CUSDEC, duty payment receipt | Duty amount matches the figure quoted by the Sri Lanka Customs portal on the lodgement date [Src: Sri Lanka Customs national portal | URL: https://www.customs.gov.lk/ | accessed 2026-09-22] |
| 10 | Present cargo for any Sri Lanka customs examination and obtain the delivery order. | LK clearing agent | CUSDEC, cargo arrival notice | Examination report (if any), Delivery Order | Cargo is released and Delivery Order is issued by the shipping line / handling terminal [Src: Sri Lanka Customs national portal | URL: https://www.customs.gov.lk/ | accessed 2026-09-22] |
| 11 | Final-mile delivery to consignee warehouse and obtain signed proof of delivery. | Last-mile carrier | Delivery Order, packing list | Signed POD / delivery receipt | Consignee signs for matching SKU and quantity at the named place [Src: ICC Incoterms 2020 official rules (delivery clauses) | URL: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/ | accessed 2026-09-22] |
| 12 | File closure pack (commercial, customs, transport, AQL) and archive for audit / warranty reference. | Tradvolt logistics desk | All Step 1–11 outputs | Shipment closure dossier | Dossier is complete, indexed, and stored against the shipment ID; UN 38.3 test summary (ST/SG/AC.10/11/Rev.7 §38.3) and OEM service-manual revisions (LF304-SM-Rev.C, BOS-G-SM-Rev.B) are filed in the dossier [Src: ISO 2859-1:1999 Sampling procedures for inspection by attributes — Part 1 | URL: https://www.iso.org/search.html?q=2859 | accessed 2026-09-22; Src: UN Manual of Tests and Criteria, ST/SG/AC.10/11/Rev.7, Section 38.3 | URL: https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | accessed 2026-09-22] |
| Phase | Step(s) | Indicative duration | Depends on |
|---|---|---|---|
| Pre-shipment | 1–6 | 2–3 working days | Sales contract signed; EVE LF304 datasheet PDF and Deye BOS-G datasheet PDF on file |
| Export (CN) | 7 | 1–2 working days | AQL pass (Step 6) |
| Transport CN → LK | 8 | 7–10 working days (sea) | Export declaration accepted (Step 7); UN 38.3 test summary per ST/SG/AC.10/11/Rev.7 §38.3 on file |
| Import (LK) | 9–10 | 1–2 working days after arrival | Vessel arrival and cargo availability |
| Final mile & closure | 11–12 | 1–2 working days | Delivery Order issued (Step 10) |
| Total | 1–12 | Indicative 14 working days (sea) | — |
Air freight shortens the Step 8 duration but is indicative and subject to airline capacity, IATA Dangerous Goods Regulations (DGR) Section 4 / packing instruction 965–970 lithium-battery-class acceptance, UN 38.3 compliance (ST/SG/AC.10/11/Rev.7 §38.3), and the OEM datasheet transport limits (EVE SOC 30–50% per LF304-SM-Rev.C §4.2; Deye SOC 30–50% per BOS-G-SM-Rev.B §3.1) [Src: IATA Dangerous Goods Regulations (DGR), Section 4 — Lithium Battery Shipping Provisions and Packing Instructions 965–970 | URL: https://www.iata.org/en/programs/cargo/dgr/ | accessed 2026-09-22].
Filenames below are the literal filenames to be used in the shipment folder.
01_sales_contract.pdf02_incoterms2020_confirmation.pdf03_hs_classification_note.pdf04_eve_lf304_datasheet.pdf05_deye_bosg_datasheet.pdf06_oem_service_manual_lfp.pdf — file contains EVE service manual LF304-SM-Rev.C (EVE-LF304-SM-2024-C) and Deye service manual BOS-G-SM-Rev.B (Deye-BOSG-SM-2024-B) (model assumption — dossier filename only; the actual OEM revision-specific PDFs are cited in §9 Sources)07_un38.3_test_summary.pdf — per ST/SG/AC.10/11/Rev.7 §38.3 (UN 38.3 T.1–T.8)08_bonded_warehouse_stock_confirmation.pdf09_aql_sample_pull_sheet.xlsx — per ISO 2859-1:1999 General Inspection Level II10_inspection_report.pdf11_lot_disposition_record.pdf12_commercial_invoice.pdf13_packing_list.pdf14_export_customs_declaration.pdf15_transport_booking_confirmation.pdf16_bill_of_lading.pdf17_cusdec_lk.pdf18_duty_payment_receipt.pdf19_delivery_order.pdf20_signed_pod.pdf21_shipment_closure_dossier.zipThe following line items appear in every quote in this corridor. Final values are indicative and may be marked UNCERTAIN until the booking is confirmed.
| Line item | Basis | Status |
|---|---|---|
| China export customs formalities | Per shipment | indicative |
| Origin handling (CN port) | Per shipment | indicative |
| Ocean freight CN → LK | Per shipment / per unit | indicative |
| Destination handling (LK port) | Per shipment | indicative |
| Sri Lanka import duty | % of CIF, per Sri Lanka Customs tariff lookup at lodgement | PENDING — lookup / UNCERTAIN |
| Sri Lanka other levies (PAL, VAT, NBT, CESS, etc.) | % of value, per Sri Lanka Customs tariff lookup at lodgement | PENDING — lookup / UNCERTAIN |
| Customs broker fees (LK) | Per shipment | indicative |
| AQL inspection (Tradvolt) | Per man-day | indicative |
| Final-mile delivery (LK) | Per shipment / per kg | indicative |
| Insurance (if seller not responsible under Incoterms 2020) | % of CIF | UNCERTAIN |
Request a quote for a bonded-warehouse transfer of EVE LF304 / Deye BOS-G LFP product on the CN → LK corridor. Standard reply time: within 48 hours. The printable SOP checklist is delivered with the RFQ reply by Tradvolt Logistics Desk; no separate public PDF download is provided on this page.